CentOS7.0部署Docker

[root@localhost ~]#yum install docker -y
Loaded plugins:fastestmirror, langpacks
base                                                       | 3.6 kB  00:00:00    

extras                                                     | 3.4 kB  00:00:00    

updates                                                    | 3.4 kB  00:00:00    

(1/4):base/7/x86_64/group_gz                               | 154 kB  00:00:01    
(2/4):extras/7/x86_64/primary_db                           |  41 kB 00:00:01    

(3/4):updates/7/x86_64/primary_db                          | 957 kB  00:00:06    
(4/4):base/7/x86_64/primary_db                             | 5.1 MB  --:--:--    
Determining fastestmirrors
 * base: mirrors.btte.net
 * extras: mirrors.btte.net
 * updates: mirrors.btte.net
ResolvingDependencies
--> Runningtransaction check
---> Packagedocker.x86_64 0:1.5.0-28.el7.centos will be installed
--> FinishedDependency Resolution
 
DependenciesResolved
 
===================================================================================
 Package       Arch           Version                        Repository      Size
===================================================================================
Installing:
 docker        x86_64        1.5.0-28.el7.centos           extras         7.2 M
 
Transaction Summary
===================================================================================
Install  1 Package
 
Total download size:7.2 M
Installed size: 31 M
Downloadingpackages:
warning:/var/cache/yum/x86_64/7/extras/packages/docker-1.5.0-28.el7.centos.x86_64.rpm:Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
Public key fordocker-1.5.0-28.el7.centos.x86_64.rpm is not installed
docker-1.5.0-28.el7.centos.x86_64.rpm                       | 7.2 MB  00:00:20    
Retrieving key from
file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Importing GPG key0xF4A80EB5:
 Userid    : "CentOS-7 Key (CentOS 7 Official Signing Key)<security@centos.org>"
 Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb124c6 a8a7 f4a8 0eb5
 Package   : centos-release-7-0.1406.el7.centos.2.3.x86_64 (@anaconda)
 From      : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Running transactioncheck
Running transactiontest
Transaction testsucceeded
Running transaction
  Installing :docker-1.5.0-28.el7.centos.x86_64                               1/1

  Verifying : docker-1.5.0-28.el7.centos.x86_64                               1/1

 
Installed:
  docker.x86_64 0:1.5.0-28.el7.centos                                             

 
Complete!